Analysis

  • max time kernel
    140s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230621-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230621-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/07/2023, 12:05

General

  • Target
    file.exe
  • Size 1.2MB
  • Sample230702-n86m2abd46
  • SHA256 c50ed0352f86462194d23cc0b3128c28eca1eaa426049abddd58e697e29831cb
  • MD5 SHA1 SHA512 SSDEEP
Score
7/10

Malware Config

Signatures

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 1 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Drops file in Program Files directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Runs net.exe
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1352
    • C:\Users\Admin\AppData\Local\Temp\is-FORG0.tmp\is-613QT.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-FORG0.tmp\is-613QT.tmp" /SL4 $D0034 "C:\Users\Admin\AppData\Local\Temp\file.exe" 956692 73728
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Program Files directory
      • Suspicious use of WriteProcessMemory
      PID:1364
      • C:\Windows\SysWOW64\net.exe
        "C:\Windows\system32\net.exe" helpmsg 2
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:856
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 helpmsg 2
          4⤵
            PID:3796
        • C:\Program Files (x86)\RejSpacer72\RejSpacer72.exe
          "C:\Program Files (x86)\RejSpacer72\RejSpacer72.exe"
          3⤵
          • Executes dropped EXE
          PID:2144

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          RejSpacer72.exe

          • Path C:\Program Files (x86)\RejSpacer72\RejSpacer72.exe
          • Size 1.1MB
          • SHA256 8ccb51fa9da80be70b9fa4425e239bb26773d2c91ca613b09d5d55e408f20ffe
          • MD5 SHA1 SHA512 SSDEEP

          RejSpacer72.exe

          • Path C:\Program Files (x86)\RejSpacer72\RejSpacer72.exe
          • Size 1.1MB
          • SHA256 8ccb51fa9da80be70b9fa4425e239bb26773d2c91ca613b09d5d55e408f20ffe
          • MD5 SHA1 SHA512 SSDEEP

          readme.txt

          • Path C:\Program Files (x86)\RejSpacer72\readme.txt
          • Size 4KB
          • SHA256 c8fa111c5b9537e3b6cab9ba763e164e27fa469f2232b82a54b206a7d892b9e9
          • MD5 SHA1 SHA512 SSDEEP

          is-613QT.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\is-FORG0.tmp\is-613QT.tmp
          • Size 664KB
          • SHA256 31f933169e44b127e3f0a80077a088ed208c2504773a084bfca4de2f53b839c6
          • MD5 SHA1 SHA512 SSDEEP

          is-613QT.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\is-FORG0.tmp\is-613QT.tmp
          • Size 664KB
          • SHA256 31f933169e44b127e3f0a80077a088ed208c2504773a084bfca4de2f53b839c6
          • MD5 SHA1 SHA512 SSDEEP

          _iscrypt.dll

          • Path C:\Users\Admin\AppData\Local\Temp\is-QADIR.tmp\_isetup\_iscrypt.dll
          • Size 2KB
          • SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
          • MD5 SHA1 SHA512

          memory/1352-133-0x0000000000400000-0x0000000000418000-memory.dmp

          memory/1352-325-0x0000000000400000-0x0000000000418000-memory.dmp

          memory/1364-148-0x0000000002230000-0x0000000002231000-memory.dmp

          memory/1364-324-0x0000000000400000-0x00000000004B5000-memory.dmp

          memory/2144-323-0x0000000000400000-0x0000000001318000-memory.dmp